Issued Patents 2025
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12288897 | Absorbent glass mat battery | Frank-Thomas Johns, Uwe Bitomsky, Andreas Dudenbostel, Matthew A. Spence, Qingfang Shi +1 more | 2025-04-29 |
| 12266783 | Negative mass for lead-acid battery electrodes and lead-acid battery including same | Frank-Thomas Johns, Cornelia Brendel, Matthew A. Spence | 2025-04-01 |